24 January 2017
⇐20170123 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170125⇒

NOAA
4 Active Regions
12626
12627
12628
12625

Flare Forecast
Flare Prediction System
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E11S12
(-178",-106") 		E24-W12
(36) 		4.3 1.1 9.1e32
2 E39N53
(-367",820") 		E45-E40
(5) 		0.5 0.6 5.6e32
3 E37S80
(-103",-942") 		E49-W14
(63) 		0.2 -0.8 -1.0e33

Note: Solar Monitor's coronal hole segmentations are performed by CHIMERA, a copy of which is available at: github.com/TCDSolar/CHIMERA.

The operations of the CHIMERA algorithm is described in a peer reviewed paper: arxiv.org/abs/1711.11476.

An extensive copy of coronal hole properties are available at: solarmonitor.org/data.

The latest positions of the coronal holes are given in heliocentric co-ordinates, and the region positions are valid on 24-Jan-2017 20:30 UT .